#667682 xfce4: Square appears on top-left corner on screen when using desktop

Package:
xfce4
Source:
xfce4
Submitter:
Alejandro Carrazzoni
Date:
2013-12-08 19:21:13 UTC
Severity:
normal
#667682#5
Date:
2012-04-05 20:36:49 UTC
From:
To:
Sometimes a square appears on the top-left corner of the screen, usually after
closing a maximized window. It only appears when looking at the desktop. I'm
using xfce with nvidia propietrary drivers and compositing turned on. There's a
screenshot attached that shows the problem.
#667682#10
Date:
2012-04-06 05:25:07 UTC
From:
To:
Never experienced something like that. Could you try to reproduce with
nouveau driver or fbdev or anything like that? Maybe try to
enable/disable compositing too.

Regards,
#667682#15
Date:
2012-04-06 07:50:05 UTC
From:
To:
2012/4/5 Alejandro Carrazzoni <ale.carrazzoni@gmail.com>
something like that too.

I suggest you to try to test if the square ever shows up without
Jdownloader running.

Hope this helps,

Best Regards

Marco Milone
#667682#20
Date:
2012-09-11 00:38:49 UTC
From:
To:
It seems the square only appears when I open JDownloader when compositing is
turned on. It doesn't always happen though. The square doesn't appear when I
turn off compositing. The issue seems to be caused by JDownloader's splash
screen. I haven't tried with nouveau though.
#667682#25
Date:
2013-11-22 23:52:33 UTC
From:
To:
I'm using nouveau now, the square is still there.
#667682#30
Date:
2013-11-27 06:38:52 UTC
From:
To:
Then it looks like it's jdownloader.
#667682#35
Date:
2013-12-08 19:16:36 UTC
From:
To:
Hi,

it seems to be an upstream bug, as I can confirm this behavior with
Gentoo Linux and xfce-4.10. I don't use jdownloader, so it is definitely
not responsible for the small square on the top left of the screen.

In my case I sometimes see a small black square when I move from an
empty virtual screen to another one with an open application like
firefox. My background image is dark, as this square. My
graphics-drivers are xf86-video-intel-2.21.15.

Interestingly, this behavior occurs not only with the xfce4 built-in
compositing feature activated, but also when I start "xcompmgr -cCfF -r7
-o.65 -l-10 -t-8 -D7 &" at the beginning of my xfce4-session. But the
square does not always occur. When I stop xcompmgr or the xfce4
compositing feature and restart it again right after that, the square is
always gone.

My system:
Linux 3.10.17-gentoo
xcompmgr-1.1.6
xfce4-session-4.10.0-r1

Greetings
Uwe